"The replacement certificates incorporate state-of-the-art technology to help deter counterfeiting, prevent tampering, and facilitate quick and accurate authentication. Additionally, USCIS employs a new and more secure printing process for the certificates to further prevent tampering."
USCIS – USCIS Redesigns Replacement Citizenship and Naturalization Certificates
USCIS Redesigns Replacement Citizenship and Naturalization Certificates. July 1, 2013. WASHINGTON—U.S. Citizenship and Immigration Services (USCIS) today began issuing redesigned certificates for citizenship and naturalization for individuals who request replacement certificates (Form N-561, …